Nano Archive

Effect of powder thermal treatment on the microstructure and electrical properties of doped ceria ceramics

Li, Shi-Ping and Lu, Ji-Qing and Fang, Ping and Luo, Meng-Fei (2009) Effect of powder thermal treatment on the microstructure and electrical properties of doped ceria ceramics. Materials Letters, 63 (20). 1689 - 1692.

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Official URL: http://www.sciencedirect.com/science/article/B6TX9...

Abstract

Ce0.8Sm0.2O2 − δ electrolytes were prepared by sol–gel methods with different thermal treatment conditions. It was found that the particle size of the powders thermally treated in N2 could be controlled less than 10 nm, due to the fact that carbons that enwrapped the precursors could inhibit their crystallization. At the same time, the nano-sized precursors could form larger nuclei at the initial stage of sintering, resulting in the formation of electrolyte with higher density and larger grain size. At the same consent of oxygen vacancies, the enhancement of electrical properties for the electrolyte was correlated to its microstructure obtained by the N2 thermal treatment.

Item Type:Article
Uncontrolled Keywords:Ce0.8Sm0.2O2 − δ electrolyte; Electrical properties; Density; Grain size; Sol–gel preparation
Subjects:Material Science > Nanostructured materials
ID Code:6577
Deposited By:SPI
Deposited On:10 Feb 2010 17:32
Last Modified:10 Feb 2010 17:32

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